Wire-nail machine.



S. L'SCHWERIN. WIRE NAIL MACHINE- APPLICATION FILED FEB- 26. 19:1.-

Patented June 4, 1918;

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3.4. SCHWERIN. WIRE NAIL MACHINE. APPLICATION FILED FEB. 26. .1917.

- Patented June 4, 1918..

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. IIVIYIIEIVTOR V y h ATTOR EV S.. J. SGHWERIN.

WIRE NAIL MACHINE;

APPiLlCATION FILED FEB-26.1917.

Patented June 4,1918

5 SHEETS-SHEET 3.

I ATTOIVEY 8.1. SCHWERIN.

WIRE NAIL MACHINE. APPLICATION FlL ED FEB. 26. I917.

5 SHEETS-SHEET 4.

LLiL I H I f f I I l Ila WITNESS INVENTOI? Parenced June 4, 1918.

S. J. SCHWERIN.

WIRE NAIL MACHINE; APPLICATION men FEB-26.1917.

Patented June 4, 1918 5 SHEETS-SHEET 5.

SAMUEL J. SCH'WERIN, OF vllfftlhiafill IETIE, OREGON.

WIRE-NAIL MACHINE.

Specification of Letters Patent.

Patented June at, 181th.

Application filed February 26. 1917. Serial No. 150,902.

. chines, of which the following is a specififor the sake of clearness.

cation.

The invention relates to machines for making wire nails, tacks, spikes,rivets, etc, and has for its object to greatly increase the capacity ofsuch machines and the rapidity with which such articles can be made.Also to provide a strong, durable machine capable of makin fourdifferent sizes of the article desired at every complete oscilla tion.The machine can beso arranged that it is possible to make tacks, rivetsand nails at the same time. All of the movements are dependent upon andcorrelated to the oscillation of a heavy central disk, which discloses anew principle of operation of such machines.

Referring to the drawings, Figure 1 is a plan, with cutting offmechanisms omitted Fig, 2 is a side elevation with a section showing twobottom cut-ofis. Fig. 3 is a side elevation showing two top cut-ofls andadjustable ieed arms. Fig. 4 is a cross sectional elevation showing theguides 48 and 48 for the heading tools 17 and 17 also the hoppers at?and 47 which catch the articles as they are made. Fig. 5 is an endelevation showing the drive and the ratchet device for the feed-inmechanism. Fig. (5 is a side elevation of one feed-in mechanism. Fig. 7is a plan of the same. Fig. 8 is side elevation of the heading tool 17.Fig. 9 is a plan of same. Fig. 10 is an end view of the head ing tool17' showing the side guide 48. Fig. 11 is an elevation of the guide head13, showing slot 48 therein which receives .the side guide 48 of theheader. Fig. 12 is a side elevation of the heavy central disk 35, withthe top cutting oil devices attached thereto and showing the lugs 15"and 33 which actuate the gripping devices when the disk oscillates, Fig.13 is an end elevation of the disk 35. Fig. 14 is a plan of one of thebottom cut-oft devices and 1-3 is a side elevation thereof.

' By referring to the plan, Fig. 1,'it will be seen that two wires maybe ted to each end of the machine at the same time and that the machineis of the double form type,

the upsetting being done at one end while the severance of the finishedarticle is aecomplished at the other, each complete oscillation of thedisk 85 resulting in the formation of four of the articles that are'being made, The four units of the machine are exactly alike, that is,the straightening rolls, the feed-in mecl'ianism, the gripping dies, theheaders and the cut-offs are just the same in each unit andtherefore adescription of one set will answer for an exposition of.

them all.

In. Figs. 1 and 2, 1, 2, 3 are the straight ening rollers, 4: and 5 thefeed rolls. Figs. 6 and 7 show the straightening mechanism in detail,the bottom grooved rollers 1 and '8 are in fixed journals and the topgrooved roller 2 can be raised by the handles 6,

' a spring keeping it in place against the bot tom rollers.

The movement of the top feed roller 4 is controlled by the pawl 1", theratchet 7, the lever 45, Figs. 6 and 7, the connecting bar 16 and thearm i6, see Fig. 3. The travel of the arm 46' corresponds to theoscillations of the disk 35 and by raising or lowering the disk end ofthe connect ing bar 16 in the vertical slot in the arm 46, the throw ofthe lever 45 can be regulated and hence the movement of the feed r0114,and a short or long section of wire as may be desired can be fed to themachine. The wire guide 8 is simply a grooved channel through which thewire passes after leaving the feed rolls,tending to straighten same anddirect its forward end to the dies or gripping device 11 and 12. Thesection 12 of the gripping device is movable and the lever 9' and spring10 tends to keep it away from the stationary part 11, thus leaving anopening between them for the wire. The part 11' is firmly ailixed to theframe of the machine and the face of the dies 11 and 12 are notched soas to grip the material between them firmly when they are pressedtogether. On the disk 35 are cam like projections 15, 15, 33 and 83,Fig. l and 12 and 13. When the disk 35 swings upward toward the die 12this projecting lug i'orces it toward 11 and thus grips the wire so thatits forward end. can be upset at the proper in stant. The heading toolsare indicated in Fig. 1 by numbers 17 and 17, also see Figs. 8 and 9.Each tool has a header each end, 14 and 32, 14' and 32 respectively.

roe

When the disk 35 swings upward and just as the lug 15 engages 12', theeccentric calm 36 on shaft 18 which is keyed to the disk moves theheader 14 toward the gripping dies 11 and 12 with a powerful thrust andupsets the end of the wire which is held in place by the dies. On theframe side of the heading tool are guides like l8 and 4L8 moving inslots like 48, Fig. 11, in stationary guides 13, 13, 31 and 31, aflixedto the frame of the machine and which keep the heading tools in. perfectalinement notwithstanding the heavy service they are required toperform.

The bottom c'ut ofi' mechanism shown in Figs. 2, I land 15. At a properdistance below the axis 18 of the oscillating disk a piece of shaft 38,38, Fig. 13, extends through the disk on either side forming projectionswhich engage the heavy cut oil bars 37, an end view of which is shown.in F 4i and 5, and 37, shown in Fig. This cut oil" bar has an enlargedpart, such as a, a, on its top edge which engages the lugs c and arespectively of the cut-off device when the disk swings forward andback. The details of the cut-off are shown in Figs.- l t and 15, theknife isfirmly held by the part b which is free to move up and down inslot it, the spring (Z tending to keep the bottom lug c in constantengagement with the cutoff bar 37. The cutoff holder 9 is afiixed tothe'frame as shown. in Fig. 2. The top cut-offs, Figs. 3, l2 and 13, areplaced on the upper part of the disk 35, two on each side, cutting offfour units of the article being made at each complete oscillation. InFig. 3, the cut-offs i and 7c are shown in relation tothe rest of themechanismeach cuts on the downward movement of its side of the disk. Thecutting edges j, y", 5 project .somewhat beyond the cutoifs 2/, t, as

shown by j, j in Fig. 13, so as to reach the material being fed to themachine. Figs. .2. 3 and 5 show the drive. The connecting rod 39 isconnected at one end to the crank pin 4-0 of crank disk l1 and at theother to the lower end of the oscillating disk 35. When power appliedthrough pulleys 42, a3, a rocking motion is given to the disk 35 whichactuates every moving part of the machine.

Wire is fed through the straightening rolls 1, 9., 3 to the feed rolls land 5. The disk end of the feed bar 16 is adjusted in the slot at bottomof thrust arm d6 so as to give just the right throw to the lever 45,which actuates the pawl and ratchet 7 and 7 controlling the movement ofthe top feed roll l and the desired length of wire is fed to themachine. The wire passes from the feed rolls through the guide 8 andthence between the gripping dies 11 and 12, the

latter being IIIOVHlTIlB toward and away from the stationary part 11.When the lug 1 on the disk 35, Fig. 1, moves upward 1t enineaaee gagesthe die 12 forcing it toward 11' and the wire between them is held in astrong grip, the forward end of the wire projecting slightly beyond thedie so as to leave enough metal to form a head. At the same time theeccentric 36 gives the header tool 17 a powerful thrust and the header1% presses a head on the forward end of the wire that projects throughthe gripping dies. The disk 35 then swings in the opposite direction,the lug 1.5 releases the gripping die 12, the spring 10 moving the dieout of engagement with the wire, the feed rolls 4: and 5 move the wireforward the proper length and the header tool 17 moves away from theadvancing wire. As the wire is being moved forward, the lug 38 moves thecut-off bar 37 so as to bring a into engagement with c ofth'e bottomcut-oil tool 6, raising the knife 7' upward. At just this same instantthe knife j of the top cut-off '5 moves downward and the wire is severedat the proper place, leaving enough metal pro ecting through the dies 11and 125 to form a good head and pointing the nail that has'just been cutoff. The nails as made drop into a hopper 7 and fall into a keg placedto receive them. The movements above described are very rapid and arerepeated with precision. They are duplicated at the other end of themachine but in just the opposite order. For example when the wire isbeing cut off ,by the knives f and j, a. head is being put on the wireby the header 32; when the wire is being cut off by the knives f and Z,a head is being put on the wire by the header 14:. These movements'arealso duplicated on the other side of the machine and in the same order,the result being that two nails are made by precisely similar movementsand at the same time at each end of the machine at each forward and ateach backward swing of the central disk 35. Thus at each completeoscillation of the disk four nails are' made, two at each end of themachine. It will be seen that by adjusting the feed-in mechanismsdifferently that four different lengths of wire can be fed to themachine and hence that four different sizes of nails can be made throughone complete oscillation of the disk, :1. result not obtainable with anyother type of nail making machine, and which I claim is broadly new inthe art.

I claim,"

l. in a machine of the character described, the combination of fourfeeding mechanisms, four gripping dies, four headers, four cutoildevices, and a heavy central disk, two complete units of each mechanismbeing located at each end of the machine and all of their movementsbeing actuated by and correlated to the oscillations of the centraldisk.

2. In a nail :rnaking machine, cut off means consisting of a disk, a topout-off device mounted on the disk, a-bottom cut-ofl' deaeeaaee viceattached to the frame of the machine, a cut-off bar actuated by the diskwhich raises and lowers the bottom cut-0E device so that it cooperateswith the top cut-0H device.

. 3. In a nail making machine, four top outoif devices, a central diskon which the top cut-oft" devices are mounted, two on each side, fourbottom cnt-ofi devices attached to the frame of the machine,two'at eachend, twocut-off bars actuated by the central disk which engagerespectively two of the bottom cut-ofi' devices, one at each end of themachine, imparting to them an up and down movement so that they willcooperate with their cogrespondin top cut oil? devices,

' t. In a nail ma ing machine, a bottom cut-off device. which consistsof a grooved bracket, a knife holder which is free to move up and downin the groove, a bottom lug on the knife holder, a cut-ofi bar with araised part on its top edge, a spring which keeps the bottom lug of theknife holder in engage them; with the cut-off bar, a disk which actuatesthe cut-off bar and causes the knife holder to move up and down atproper intervals, when engaged by the said raised part.

5., In a nail making machine, feeding means consisting of two sets oftwo grooved wheels disk.

6. In a nail making machine, gripping means consisting of two sets ofdies at each end of the machine, means for holding the dies apart whennot in gripping position, a central disk, lugs on each side of said diskadapted to alternately engage said sets at proper intervals and meansfor oscillating the disk.

7. Ina nail making machine, a heading means consisting of two upsettingtools, one on each side of the machine, with a header at each end ofeach upsetting tool, means for keeping each. tool in alinement, acentral disk, two eccentrics on the same shaft as the disk, one on eachside of the machine, which engage respectively the two upsetting tools,and means for oscillating the disk.

seamen .t sonwnnm.

